org.apache.fop.render.ps.PSImageHandlerRawPNG Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: PSImageHandlerRawPNG.java 1350455 2012-06-15 02:56:21Z gadams $ */
package org.apache.fop.render.ps;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.awt.image.ColorModel;
import java.io.IOException;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageInfo;
import org.apache.xmlgraphics.image.loader.impl.ImageRawPNG;
import org.apache.xmlgraphics.ps.FormGenerator;
import org.apache.xmlgraphics.ps.ImageEncoder;
import org.apache.xmlgraphics.ps.ImageFormGenerator;
import org.apache.xmlgraphics.ps.PSGenerator;
import org.apache.xmlgraphics.ps.PSImageUtils;
import org.apache.fop.render.RenderingContext;
/**
* Image handler implementation which handles raw (not decoded) PNG images for PostScript output.
*/
public class PSImageHandlerRawPNG implements PSImageHandler {
private static final ImageFlavor[] FLAVORS = new ImageFlavor[] {ImageFlavor.RAW_PNG};
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos) throws IOException {
PSRenderingContext psContext = (PSRenderingContext) context;
PSGenerator gen = psContext.getGenerator();
ImageRawPNG png = (ImageRawPNG) image;
float x = (float) pos.getX() / 1000f;
float y = (float) pos.getY() / 1000f;
float w = (float) pos.getWidth() / 1000f;
float h = (float) pos.getHeight() / 1000f;
Rectangle2D targetRect = new Rectangle2D.Float(x, y, w, h);
ImageEncoder encoder = new ImageEncoderPNG(png);
ImageInfo info = image.getInfo();
Dimension imgDim = info.getSize().getDimensionPx();
String imgDescription = image.getClass().getName();
ColorModel cm = png.getColorModel();
PSImageUtils.writeImage(encoder, imgDim, imgDescription, targetRect, cm, gen);
}
/** {@inheritDoc} */
public void generateForm(RenderingContext context, Image image, PSImageFormResource form)
throws IOException {
PSRenderingContext psContext = (PSRenderingContext) context;
PSGenerator gen = psContext.getGenerator();
ImageRawPNG png = (ImageRawPNG) image;
ImageInfo info = image.getInfo();
String imageDescription = info.getMimeType() + " " + info.getOriginalURI();
ImageEncoder encoder = new ImageEncoderPNG(png);
FormGenerator formGen = new ImageFormGenerator(form.getName(), imageDescription, info.getSize()
.getDimensionPt(), info.getSize().getDimensionPx(), encoder, png.getColorSpace(),
false);
formGen.generate(gen);
}
/** {@inheritDoc} */
public int getPriority() {
return 200;
}
/** {@inheritDoc} */
public Class getSupportedImageClass() {
return ImageRawPNG.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return FLAVORS;
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
if (targetContext instanceof PSRenderingContext) {
PSRenderingContext psContext = (PSRenderingContext) targetContext;
// The filters required for this implementation need PS level 2 or higher
if (psContext.getGenerator().getPSLevel() >= 2) {
return (image == null || image instanceof ImageRawPNG);
}
}
return false;
}
}